<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../react18/react.development.js"></script>
  <script src="../react18/react-dom.development.js"></script>
  <script src="../react18/babel.min.js"></script>
</head>

<body>
  <div id="app"></div>
  <script type="text/babel">
    function Content (){
        return <p>孤独症</p>
    }
  class Title extends React.Component{
    //类式组件必须拥有一个render方法,当组件被使用的时候 组件实例会找render方法拿返回的虚拟DOM
    render(){
        return <h1>key L 你现在是kong</h1>
    }

  }
  class APP extends React.Component{
    render(){
        return( 
            <div>
                <Content/>
                <Title/>
            
            </div>)
    }
  }

const root = ReactDOM.createRoot(document.getElementById('app'))
root.render(<APP/>)
  </script>
</body>

</html>